Phosphoric Acid in Human Urine. 225 
reaction : noting the quantity of the solution of perchlorid of 
iron used, we proceed in like manner with two other portions of 
urine ; if the results agree, we then calculate the amount of the 
solution of iron required for all the urine from what was found 
urine which may be of the highest importance in therapeutics. 
Prout, Bright and others have but opened a field of labor and 
n the urine,* and then we shall have the data whence to 
reason, and possibly to discover, not only the causes and cure of 
calculus without the use of the surgeon’s knife, but light also 
may be thrown upon the treatment of many other diseases which 
how baffle the skill of the physician. 
Determinations of Phosphoric acid in Urine. 
The following results were obtained from the urine of four 
Persons, mostly from that of one person. 
tine of 24 hours, Phosphoric acid. Urine of 24 hours. Phosphoric acid. 
1645 ce, 9-118 grms. 1607 ce. 3931 grms, 
1150 2909 “907 4336 
1690 3-454 1208 2719 
1675 2611 1640 2837 
1462 3647 2655 6-051 
462 3-647 1777 51126 
is 07 3-744 2058 
1707 8-744 1768 3-407 
1701 6-447 98 
1701 6-447 1561 3941 
1380 2862 1916 4946 
1380 62 740 2-528 
2-8 ae 
A Se age eed eae 
Averag 1000 ec. gives 2°317 grms. ph er ae gn 
2 ; 24 hours gives 1610 ce. urine, and 8°72 grms. phosphoric acid. 
* Dr. Breed has discovered phosphoric acid in he fluid — Steppe ee of 
essen i rati isi ominis. From D ce. ; the 
obtained by the tion of paracentisis a "in the urine of this inet 
+ Average of wedne oe ae te oO ae he oo Se 2 ; teat Me Das ae i . see - £ 
Srconp Serres, Vol. XII, No. 38.—March, 1852. 29 
it we 
